Scatter Line Charts and Line Charts look visually the same because the data points in the plot area are connected with lines. However, they significantly differ in the way each series type plots the data it presents in the plot area.

In Scatter Charts, both the vertical and the horizontal axis are value axes. This means that they render numerical values and not groupings of data, and are capable of displaying data at the intersection of each X- and Y-axis value. That is why the data points the Scatter Line Charts display might be distributed as both evenly-spaced or unevenly-spaced coordinates.

The fundamental differences between the two series types make each a more suitable solution in particular scenarios. Scatter Charts are better to use when your project requires you to:

Scatter Line Charts enable you to render the lines between the points in different styles. To set the appearance of the lines, use the style option which provides the following available styles:

Normal—The default style which produces a straight line between data points.

Smooth—The style causes the Scatter Chart to display a fitted curve through data points. It is suitable displaying data with a curve and for connecting the points with smooth instead of straight lines.

The following example demonstrates how to use the different types of lines.

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